Questions tagged [creature-design]

For questions regarding the viability of a life-form design. These questions should focus on biologically plausible creatures.

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multiple retinas in one eye

is it possible to have multiple retinas, would there be advantages to this? Or would it just not work at all? I have a diagram (a shitty one) and more explanation if needed Edit: sorry for the ...
spiderwriter's user avatar
-3 votes
0 answers
35 views

Could fire-breathing lifeforms achieve sapience [closed]

Fiery organisms are rare in nature, but looking at their intellect presents a troubling picture for worldbuilders At the lower end we have humans, fairly intelligent organisms with only a basic ...
Ichthys King's user avatar
3 votes
1 answer
114 views

Gene-smiths creating super warriors. They need a secondary digestive system with a new super food

Got a faction that's making super warriors. The gene-smiths of my story managed to biologically engineer a far better human body. That's easy. This includes a far more developed digestive system, ...
Seallussus's user avatar
  • 8,324
6 votes
6 answers
4k views

No stomach, how do I eat?

Imagine a creature that through congenital diseases and mutations starts slowly losing its digestive system as it becomes less and less efficient and smaller until it is vestigial and eventually ...
Xenophile's user avatar
  • 1,006
11 votes
10 answers
4k views

Is this super soldier viable and grounded?

Below is a excerpt of a set of notes that I have compiled that is the basis for a science fiction story that I am writing. I have spent a fair amount of time trying to come up with a close/hard/sci-...
TheWookieeBreath's user avatar
5 votes
1 answer
87 views

What's an effective swimming stroke for a species with gliding membranes?

I'm writing about an alien species of lean-bodied, long-limbed bipeds who have vestigial gliding membranes stretching between their elbows and hips (female) or knees (male); see: https://...
Christopher Bennett's user avatar
2 votes
2 answers
179 views

Does a saber-toothed humanoid make sense as an animal?

The creature has the head and neck of a saber-toothed predator. It has long upper canines and kills with a strong downward swing of the head, hence its neck is strengthened to perform this task Its ...
Ichthys King's user avatar
3 votes
1 answer
123 views

How could a Massive Animal Thermoregulate?

In my world, there are massive vertebrate creatures that live on the planet's savannahs and rainforests. Alongside others that live in the frigid south pole and deep in the ocean trenches. I'm ...
New_Archaeoceti_325's user avatar
5 votes
2 answers
88 views

Growth rate of super moss

Following an answer to aprevious question I posted, this world does is filled with moss and lichen fields that make other plant growth (and crop cultivation) impossible. But after researching mosses ...
Rhomaioi's user avatar
  • 1,314
0 votes
1 answer
99 views

Designing the best Meat livestock [closed]

I have been wondering what would be the best animal to produce meat, excluding insects and artificial meat. The following questions are meant to provide ideas: Would it be better for it to be an ...
Rhomaioi's user avatar
  • 1,314
7 votes
6 answers
1k views

Labour-Intensive staple crop

I am trying to design a staple crop (preferably grain or tuber, but can be anything if necessary) that is very productive, capable of sustaining great population densities, but is also very labour ...
Rhomaioi's user avatar
  • 1,314
12 votes
9 answers
2k views

How would a creature adapted to life in a completely dark environment also have the ability to change its skin pattern like an octopus?

I'm in a bit of a pickle - I've designed a monster for a horror novel I'm working on, but I've added too many characteristics that I like for it to make logical sense. One of these features is that ...
Graham Payton's user avatar
4 votes
6 answers
2k views

How would one design a superhuman?

I'm working on a story where the MC gets his body modified like Kamen Rider's. As such he becomes stronger than a normal human. But instead of being cyborg enhancements, they are biological ...
TheGoldenBoy2188 The Coolest G's user avatar
6 votes
1 answer
283 views

Emotive Plate Eyes

Drawings included to better illustrate what‘s going on here. Also because I’m utterly addicted to doodling lately. I recently learned about the Grideye Fish, and it inspired a design for a sci-if ...
Other Worlds's user avatar
7 votes
7 answers
2k views

How can I make two hearts work?

It’s an occasional trope in sci-fi where warrior species get two hearts to better survive combat. Like the Star Trek Klingons (apparently), Halo Sangheili and the 40K Space Marines. However, two ...
Demigan's user avatar
  • 45.4k
3 votes
1 answer
96 views

Combining a electrocyte and a muscle fibre

Basically the title itself. Is it possible to combine the function of a electrocyte and a myocyte, such that muscles double up as electric organs? Electric organ Myocyte Observing the anatomy of a ...
Baron_vonCernogratz's user avatar
1 vote
2 answers
1k views

How biologically plausible is my snake species? [closed]

How biologically plausible is my snake species? The young are about 25 meters long, and the adults average 90 meters. Their proportions are like an ordinary snake’s. What kinds of advantages and ...
Zona C's user avatar
  • 153
2 votes
2 answers
97 views

Debris protection for spiracle-like breathing holes, except 'nose' hair

Follow-up from: Where to place breathing holes/spiracles on a bipedal humanoid My humanoid bipedal species and other creatures sharing a common ancestor primarily breathe through spiracle-like ...
SaintDiabolus's user avatar
8 votes
2 answers
840 views

Anatomical requirements for human speech

I am writing a species of humanoid whose skull shape more resembles that of young baboons, with somewhat large canine teeth. They are fellow primates and have a similar upright posture to humans, ...
10000zooids's user avatar
5 votes
1 answer
164 views

Where to place breathing holes/spiracles on a bipedal humanoid

I think the spiracles ["operculums"] of the creatures from James Cameron's Avatar are really interesting and am thinking on using the idea for the fauna of a planet. In the movies, the ...
SaintDiabolus's user avatar
9 votes
11 answers
4k views

Why are extra-dimensional monsters harmed by electricity but not physical blows? [closed]

Setting is based heavily on the works of HP Lovecraft, set in a world where mankind has to contend with extradimensional monsters known as Horrors. The Horrors vary in ability and physiology, but a ...
Demiurge777's user avatar
0 votes
6 answers
583 views

What is the purpose of mermaid growing hair on the head? [duplicate]

Mermaids are once believed to only exist in mythology or in literature but today they numbered over 9000! They are found thriving in many parts of the ocean especially the warmer water, they have head ...
user6760's user avatar
  • 47.9k
1 vote
1 answer
122 views

How large and tall can a bipedal, upright standing, mostly herbivorous therapod get? [duplicate]

I was originally gonna post this as one question with my previous one, but since these are two different topics I've decided to split them. Previous question: What is the best Foot shape for a Bidepal ...
TheGoldenBoy2188 The Coolest G's user avatar
5 votes
2 answers
419 views

What is the best Foot shape for a Bidepal uprighting standing dinosaur?

I'm working on a idea for a Gojirasaurus/Godzillasaurus species of dinosaur (a fictional dinosaur that was the dinosaur that would eventually become Godzilla due to the effects of radiation.) The ...
TheGoldenBoy2188 The Coolest G's user avatar
-4 votes
1 answer
92 views

Does a deep sea electric ray creature sound plausible?

I was making a species for a school project and would like to know if my idea is plausible. It is kind of barebones though. I was thinking of a deep sea electric ray that uses its tail as a sort of ...
bamaskd's user avatar
1 vote
1 answer
156 views

What chemicals could convert CO2 into oxygen within a living organism?

I'm trying to create an original species within semi-realistic biological constraints. I need a way for a giant (7-8 feet long) arthropod to convert large amounts of CO2 into breathable oxygen for ...
Brimstone's user avatar
-1 votes
1 answer
77 views

It's possible to create an inter-species university? [closed]

Imagine if we could ignore the biology boundaries, for example, allowing aquatic monsters like mermaids to stay hydrate while being on land, then it's possible to create a study place where all type ...
Jellyfish's user avatar
9 votes
8 answers
4k views

Why does a vampire have tusks?

Earlier this morning, I received 4 mummified corpses carbon-dated back to the late 17th century. Let's name these based on their unique traits: Fang, Saw, Bunny and the Boar. On closer examination, ...
user6760's user avatar
  • 47.9k
4 votes
3 answers
5k views

What is the size of the largest possible flying animal? Realistically speaking?

I’d like to create fantasy creatures that can fly using their own realistic physiology without magic or any kind of supernatural power. Many references on the internet mention that popular dragons ...
kmh's user avatar
  • 49
4 votes
3 answers
395 views

How could I redesign my dragons to have 6 limbs and still be able to fly?

In a previous post, I asked about dragons in my stories and how I could make it plausible for them to fly while also meeting the criteria of having 6 limbs and being 15 to 20 feet long when fully ...
Godzilla Louise's user avatar
7 votes
6 answers
2k views

What types of materials would be generated by a lava monster that has been cooled down rapidly?

I want to create a magma slime, which has a magical vulnerability to being cooled down and turns to rock easily (like when hit by a water or an ice spell). This rock can then be shattered to gather ...
Leticia's user avatar
  • 81
8 votes
8 answers
1k views

Are Liquid Brains Possible or Viable?

I'm designing an alien species roughly based on starfish. Starfish in the real world don't have brains or blood, they just let seawater run their nervous and circulatory systems, but I figure a ...
Julia Lang's user avatar
3 votes
2 answers
1k views

How would a naga swim underwater? [closed]

Naga is a mix of a human torso and the lower body of a serpent. With this combination, how would they move when they swim?
ariel ivory's user avatar
2 votes
2 answers
186 views

Could a creature which evolved in space using sunlight and gas for energy and propulsion, glide in our atmosphere?

I'm imagining roughly human-sized creatures which have 'sails' that they use to absorb solar energy and steer themselves around the solar system. I'm trying to think of a feasible way such a being ...
Michael Thompson's user avatar
8 votes
6 answers
2k views

Where should an electric organ go in a human

In my story with magic based around the manipulation of electromagnetism, I need the characters to have a hand-wave electric organ. This electric organ is about 10 cm per organ with the capacity to ...
I like lightning 's user avatar
2 votes
4 answers
220 views

Alien mobile plant life

I'm inquiring about the possibility of plants on other worlds developing the ability to move over land on their own (they need not be sapient, but I wouldn't rule the possibility of sapience out ...
king of panes's user avatar
0 votes
1 answer
148 views

How would a balloon-like plant function?

I've been thinking about a floating and photosynthesizing plant, which would either float due to trapped light gasses, or something else that has a very low density. I'm thinking of a plant roughly in ...
Jakav's user avatar
  • 550
3 votes
1 answer
114 views

How reasonable is my hypothesis regarding ring-tailed orthostatic bipeds?

So, in my process of designing humanoid/humanesque sapient aliens, I often find myself wanting to have a species which are orthostatic (upright) bipeds like humans but which nonetheless have long ...
Choroflorocarbon's user avatar
5 votes
1 answer
190 views

Is my alien foot design viable for a compromise between arboreality and cursoriality?

I keep trying to design humanoid and humanesque sapient aliens, but I often run into issues with the feet; In an orthostatic biped, an enlarged first toe (big toe) is probably essential to maintain ...
Choroflorocarbon's user avatar
-3 votes
2 answers
170 views

requirements for spatial manipulation [closed]

In my story, I have a power system that allows humans to control certain universal forces. For example, chronomasters could control time and electromancers could control electromagnetism. Some spatial ...
user357329's user avatar
18 votes
13 answers
5k views

How are sapient crows utilized if there are phones for communicating?

A shaman society secret to normal humans, in the late 2000s era where phones and the internet exist: why and how would they still put to work their black feathery friends? They were crucial before all ...
Kringle_Kryptid's user avatar
1 vote
2 answers
140 views

Could Aluminum-Based Placoderm-like Tooth Structure Break a Human Skull?

I have a monster in mind, but a major part of its introduction to the story is that I want to have it bite a human soldier's skull clean off. Its teeth are similar in structure to a Placoderm's, but ...
TheDarkeLordeReturns's user avatar
3 votes
2 answers
2k views

Muons as an Energy Source for Life

I had an idea of making a bacterium use muons from cosmic rays for energy storage purposes. Muons are heavier versions of electrons, but unlike electrons, they aren't very stable and last only for 2.2 ...
Neil Iyer's user avatar
  • 1,308
0 votes
2 answers
168 views

How will the genetic mechanism of reproduction work in a species with four sexes, where there are two types of men and two types of women? [closed]

I am writing a story about a certain population of people who were artificially settled on a terraformed planet. The main feature of this civilization is that they have four sexes: Man-man Man-woman ...
Frank Thompson 4's user avatar
1 vote
0 answers
35 views

Explosive Plant/Chemotrophs [duplicate]

I'm looking for an autotroph that produces an explosive compound for either reproductive or defensive purposes that an intellegent alien could harvest and domesticate for the purposes of producing ...
Evangel's user avatar
  • 11
2 votes
3 answers
304 views

What would a planet where giant creatures live be like? (gravity, weather, etc.)

I am thinking about a planet on which gorilla-like people live in. Gorilla-shaped, walking on their knuckles, but with the capability of complex speech and a slightly more humanoid face (possessing a ...
nunchucks's user avatar
2 votes
4 answers
494 views

How to make electro kinetic immune to electricity

In my hard science world there is a character that can output electrons around 30000 volts and around 50,000 amps.The problem is that they would instantly die every time they use their ability. So I ...
I like lightning 's user avatar
5 votes
6 answers
1k views

Eyes that aren’t spheres: possibilities? [duplicate]

I have a sci-fi-like universe and one of the species has long, vertical eyes. But would this be anatomically possible without a sphere-like structure? I know that compound eyes are a thing, but how &...
apsistema's user avatar
0 votes
4 answers
215 views

How can a moon-sized creature evolve? [duplicate]

I wanted to write the evolutionary history of one of the creatures in my story based on scientific principles. This creature is the size of the moon and can live in space. I initially used the limited ...
The villager's user avatar
0 votes
1 answer
123 views

How to support the evolution of a giant creature across generations [closed]

In my story, in which I want to rely on scientific logic as much as possible, I want a creature to evolve to become at least the size of a country and you can live in space. The means of evolution for ...
The villager's user avatar

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